For the first time in 2010, the Storm Prediction Center in Norman, OK posted a moderate risk for a portion of the United States. The risk is well to our south for Friday, but Iowa will contend with its own severe weather threat. This is the longest the SPC has gone in a year without issuing a moderate or high severe weather risk For more on the last time something like this happened, check out our blog from earlier this week here.
Now on to our threat for severe weather… It’s expected a triple point will develop somewhere in Nebraska or Kansas tomorrow, touching off the development of severe thunderstorms. Supercells capable of producing tornadoes and very large hail are possible with these storms as they move into southwest Iowa.
In the latest update from the SPC, the slight risk area has increased, pushing more into portions of central and eastern Iowa. My current thinking is that this covers any potential of a widespread wind event or overnight thunderstorms capable of producing large hail. This is all something we will keep a close eye on.